CONSTRUCTORA, SERGIO ANDRES RIVERA ARANCIBIA: public contracts won without a rival in Chile: 2 uncontested awards; 50% of its awards; 1 without a competition; 1 single bid.
Assay record ASY-CL-0J7V77G1D2 · Cite as: Assay Systems, “CONSTRUCTORA, SERGIO ANDRES RIVERA ARANCIBIA: public contracts won without a rival in Chile”, https://assay-systems.com/register/cl/uncontested/s/constructora-sergio-andres-rivera-arancibia/
CONSTRUCTORA, SERGIO ANDRES RIVERA ARANCIBIA won 2 of its 4 public contract awards in Chile without a rival from 2024-01-19 to 2024-12-02: 1 without a competition and 1 after a competition that drew a single bid. 1 buyer awarded it without a rival, the largest SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI with 2.
An award is uncontested when the buyer had no rival offer to weigh: it was made without a competition (direct award, negotiated procedure without a call for tenders, sole-source or advance-notice contract), or a competition was held and only one bid arrived. Every count below is built award by award from the official notices. Awards to individuals are not included.
SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI gave CONSTRUCTORA, SERGIO ANDRES RIVERA ARANCIBIA 3 awards: 1 without a competition, 1 after a competition with a single bid. First 2024-01-19, latest 2024-12-02.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2024-10-09 | SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI CL-51408407 | No competition direct | — |
| 2024-01-19 | SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI CL-9270074 | Single bid Licitación Pública entre a 2000 y 5000 UTM (LQ) | — |
Every uncontested award in Chile · All countries
Source: ChileCompra / Mercado Público open data (purchase orders and tenders). Awards are matched to their buyer and supplier as published. Values in these notices often state a framework ceiling rather than a contract amount, so awards are counted, not summed. Updated 17 October 2026.